Science Buddies
Science Buddies: Build a 'Breath Spray Bomb' to Study Small Explosion
Hold onto your hats. In this science fair project, you will make a device that sends a film canister across the room with a small chemical explosion. The energy for the explosion is derived from the combustion of ethanol. You will...
University of Calgary
Gunpowder
This history note on gunpowder looks at the invention of gunpowder by the Chinese and its use against the Mongols in warfare.
Science and Mathematics Initiative for Learning Enhancement (SMILE)
Smile: Colliding Spheres
This lab activity from the Illinois Institute of Technology lets students investigate the impact of collisions upon the velocity and momentum of the colliding objects. Requires understanding of vectors.